Half-lives of /sup 199/Rn and /sup 199/Rn/sup m/

Journal Article · Wed Jul 01 00:00:00 EDT 1981 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.24.298· OSTI ID:6330790

Enge, H A; Salomaa, M K; Sperduto, A; Schier, W; Wegner, H E

The nuclide /sup 199/Rn and the isomer /sup 199/Rn/sup m/ were produced in the reaction /sup 169/Tm(/sup 35/Cl, 5n)/sup 199/Rn. An electromagnetic velocity filter separated the recoiling residual nuclei from the beam at zero degree. The nuclei were embedded into a surface-barrier detector recording both the arrival pulse and the alpha-decay event. The half-life for /sup 199/Rn in its presumed ground state (E/sub ..cap alpha../ = 6.99 MeV) has been determined as 0.5 +- 0.2 sec and the half-life of /sup 199/Rm/sup m/ (E/sub ..cap alpha../ = 7.06 MeV) is 0.29 +- 0.05 sec.

• Research Organization: Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6330790
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 24:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651922* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
CHARGED-PARTICLE REACTIONS
CHLORINE 35 REACTIONS
COMPOUND-NUCLEUS REACTIONS
DATA
DECAY
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HALF-LIFE
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
ISOMERIC NUCLEI
ISOTOPES
NANOSEC LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RADON 199
RADON ISOTOPES
TARGETS
THULIUM 169 TARGET